For an inviscid fluid we have euler's equation (vectors are denoted by bold characters) )= vp - vgx + v xu at and whether or not the fluid is incompressible, we also have the conservation of mass dp +pv u 0. dt show that x vp dt deduce that, if p is a function of palone, the vorticity equation is exactly as in the incompressible, constant density case, except that ois replaced by ap.

Rain is pulled by gravity which is a non contact force

Ithink the answer is fusion 

2.77 x 10^-3 its for plato user 

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.